Ento Key

Objectives After working through this chapter, you should be able to: Explain what vergence and refraction are Explain how sign convention works, and be able to determine whether a distance…

Objectives After working through this chapter, you should be able to: Explain ‘thin film interference’ Explain why the interference pattern is colourful Produce a thin film demonstration of your own…

Below are some representative answers to the ‘Test Your Knowledge’ questions that appear at the end of every chapter. They’re designed to help you focus your learning, so make sure…

Objectives After working through this chapter, you should be able to: Explain how the human eye focuses distant light on the retina Explain the different contributions of refractive index and…

Objectives After working through this chapter, you should be able to: Explain how a pinhole produces an image Create your own camera obscura Introduction As we discussed very briefly in…

Objectives After working through this chapter, you should be able to: Explain why it is difficult to see the back of the eye and the anterior angle without the help…

Below are some representative answers to the ‘practice questions’ that appear within any chapters where we need to learn to apply some maths. They’re designed to help you focus your…

Objectives After working through this chapter, you should be able to: Explain how microwaves heat food using interference Explain how we can use chocolate to measure the speed of light…

Objectives After working through this chapter, you should be able to: Explain what interference is and how it can be used to measure distances Explain what OCT stands for Explain…

Objectives After working through this chapter, you should be able to: Define a wavefront aberration Explain how aberrations can affect the resultant image Explain a Zernike polynomial Understand how aberrometers…